Inocencio, B. T.; Calimlim, A. C. . Development and Validation of Teacher Made Science Workbook of Grade 8 Students in the Philippines. Int. J. Multidiscip. Appl. Bus. Edu. Res. 2021, 2 (10), 858-869. https://doi.org/10.11594/ijmaber.02.10.02.